APA-Zitierstil (7. Ausg.)

Raiteri, C. M., Heidt, J., & Wagner, S. (2001). Optical and radio variability of the BL Lacertae object: A possible 5-6 year periodicity. Astronomy and astrophysics, 377(2), . https://doi.org/10.1051/0004-6361:20011112

Chicago-Zitierstil (17. Ausg.)

Raiteri, Claudia M., Jochen Heidt, und Stefan Wagner. "Optical and Radio Variability of the BL Lacertae Object: A Possible 5-6 Year Periodicity." Astronomy and Astrophysics 377, no. 2 (2001). https://doi.org/10.1051/0004-6361:20011112.

MLA-Zitierstil (9. Ausg.)

Raiteri, Claudia M., et al. "Optical and Radio Variability of the BL Lacertae Object: A Possible 5-6 Year Periodicity." Astronomy and Astrophysics, vol. 377, no. 2, 2001, https://doi.org/10.1051/0004-6361:20011112.